Continuous back up from My Book Essential (1.5tb)

Need help!

It would seem as though the WD HD is running  for long periods of time and using between 50 -70% of the CPU. Why is this and how can this amount of usage be slowed down or eliminated?

I am running on xp os SP3.



Same thing happens on my 3tb unit, running Windows 7 Home Premium 64-bit.  Made my wife’s laptop unsuable.  I uninstalled the WD software, and am now using the free Microsoft Sync Toy (just google it), and scheduling a sync at a specified time.  Works great.